diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2fc67e7f..206675a2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,12 +5,12 @@ cmake_minimum_required(VERSION 3.10)
 if(${CMAKE_VERSION} VERSION_LESS 3.12)
     project(
         Htool
-        VERSION 0.8.1
+        VERSION 0.9.0
         LANGUAGES CXX)
 else()
     project(
         Htool
-        VERSION 0.8.1
+        VERSION 0.9.0
         DESCRIPTION "A header only c++ library that provides Hierarchical matrices."
         HOMEPAGE_URL "https://github.com/htool-ddm/htool"
         LANGUAGES CXX)
diff --git a/include/htool/htool_version.hpp b/include/htool/htool_version.hpp
index 54e14108..059c9eeb 100644
--- a/include/htool/htool_version.hpp
+++ b/include/htool/htool_version.hpp
@@ -2,8 +2,8 @@
 #define HTOOL_VERSION_HPP
 
 #define HTOOL_VERSION_MAJOR 0
-#define HTOOL_VERSION_MINOR 8
-#define HTOOL_VERSION_SUBMINOR 1
+#define HTOOL_VERSION_MINOR 9
+#define HTOOL_VERSION_SUBMINOR 0
 
 #define HTOOL_VERSION_EQ(MAJOR, MINOR, SUBMINOR) \
     ((HTOOL_VERSION_MAJOR == (MAJOR)) && (HTOOL_VERSION_MINOR == (MINOR)) && (HTOOL_VERSION_SUBMINOR == (SUBMINOR)))